int pinVolt=A5;
int readVal;
float Volt;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  readVal=analogRead(pinVolt);
  Volt=(5./1023)*readVal;
  Serial.println(Volt);
}